/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/PropertySets/PolygroupLayersProperties.h
[UE::Geometry::FPolygroupLayer](API\Plugins\DynamicMesh\Polygroups\FPolygroupLayer) GetSelectedLayer ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & FromMesh )